upgrading weapons and your reploid body would be the standard. Having the variable weapon systems possessed by X and Zero are special so got weapon is stronger than basic upgrades but ultra rare. 100% on a percentile.

upgrading weapons and your reploid body would be the standard. Having the variable weapon systems possessed by X and Zero are special so got weapon is stronger than basic upgrades but ultra rare. 100% on a percentile.

Being built or adapted by Doctor light or Wily, having a body built by one of the two, being built out of part of creations built by the two (in example high max) being affected by evil energy (the stuff from mm8 which resided in doctor wily) these are the standard ways but I'm flexible if you can give a good reason for it otherwise.